I have the following Stereo Jack Socket, but I think Its pin layout is different than the socket images available on the internet.

Please show me how to connect this female socket to the circuit (L, R, G)

enter image description here enter image description here

  • 1
    \$\begingroup\$ What I always do: get a 3.5mm jack plug and a multimeter, then find what is connected to what. Other option without a multimeter: get a battery (1.5 V or 9V, it does not matter), a 1 k ohm resistor and headphones. Put the headphones on, not on your ears but a bit more to the front of your face, this is in case there are loud clicks. Now with battery and resistor in series, probe the contacts. It is easy to find ground, left and right that way. \$\endgroup\$ Jun 22, 2020 at 7:42
  • \$\begingroup\$ Or if you do have a multimeter but no 3.5 mm jack: instead of the battery + resistor, use the multimeter in resistance measurement. The headphones will have some resistance (often 30 ohms or more) and you will hear clicks. \$\endgroup\$ Jun 22, 2020 at 7:45
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    \$\begingroup\$ Look through the clear window on the top of the unit, and work out which contact is which. \$\endgroup\$
    – Simon B
    Jun 22, 2020 at 8:03
  • \$\begingroup\$ Yes, multimeter helped. but there are two pins with no output/connections. Are they meant to leave unconnected? \$\endgroup\$
    – Vishal
    Jun 22, 2020 at 8:37

1 Answer 1


It's a 5 pin stereo headphone jack.

enter image description here

The connections are common, left, left speaker, right speaker and right.

The speakers get disconnected when the headphone is plugged in.

  • \$\begingroup\$ So, I can leave 2 pins unconnected. \$\endgroup\$
    – Vishal
    Jun 22, 2020 at 17:06
  • 1
    \$\begingroup\$ Hi Vishal, Yes, you can. Thank you. \$\endgroup\$
    – vu2nan
    Jun 22, 2020 at 17:11

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